Неужели никак?
Сделал
debootstrap --arch=amd64 bionic bionic-chroot
mkdir bionic-chroot/root/binaries
mkdir bionic-chroot/root/binaries/appimage
mkdir bionic-chroot/root/bin
cp appimagetool-x86_64.AppImage bionic-chroot/root/binaries/appimage/
systemd-nspawn -D bionic-chroot/
root@bionic-chroot:~# /root/binaries/appimage/appimagetool-x86_64.AppImage --help
fuse: device not found, try 'modprobe fuse' first
Cannot mount AppImage, please check your FUSE setup.
You might still be able to extract the contents of this AppImage
if you run it with the --appimage-extract option.
See https://github.com/AppImage/AppImageKit/wiki/FUSE
for more information
open dir error: No such file or directory
root@bionic-chroot:~#
root@bionic-chroot:~# modprobe fuse
modprobe: FATAL: Module fuse not found in directory /lib/modules/5.4.0-135-generic
root@bionic-chroot:~#
cast derlafff
UPD